Sodium, 24-Hour Urine with Creatinine

Sodium, 24-Hour Urine with Creatinine

Test Code

838
84300, 82570
838
84300, 82570
Ordering Restrictions may apply. Please provide SERVICE AREA INFORMATION to find available tests you can order.
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection is not available in your area through Quest Mobile.

Clinical Significance

Sodium, 24-Hour Urine with Creatinine - The excretion of sodium varies with dietary intake. There is a diurnal variation of sodium excretion with excretion being greater during daytime than during the night. Decreased levels are seen in congestive heart failure, excessive sweating, diarrhea, pyloric obstruction, malabsorption and primary aldosteronism. Increased levels may be due to increased salt intake, failure of the adrenal glands, diabetic acidosis, salt losing renal disease, diuretic therapy and water deprivation dehydration. The creatinine value provides evidence of proper 24-hour urine collection.

Test Resources

None found for this test
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Test Details

Includes

  • CPT code 81050 may be added at an additional charge for volume measurement

Methodology

Ion Selective Electrode (ISE) • Spectrophotometry (SP)

Reference Range(s)

See Laboratory Report

LOINC® Codes, Performing Laboratory

Service Area must be determined
CPT code 81050 may be added at an additional charge for volume measurement

Methodology

Ion Selective Electrode (ISE) • Spectrophotometry (SP)

Reference Range(s)

See Laboratory Report
Service Area must be determined

Preferred Specimen(s)

10 mL aliquot of a 24-hour urine collected in a no preservative plastic urine container

Alternative Specimen(s)

Urine preserved with boric acid • Urine preserved with acetic acid • Urine preserved with HCl • Urinalysis transport tube (yellow-top, blue fill line, preservative tube)

Minimum Volume

2 mL

Collection Instructions

Record total volume and collection duration on specimen container and test requisition

Transport Container

Plastic urine container

Transport Temperature

Room temperature

Specimen Stability

  • Room temperature: 7 days
  • Refrigerated: 7 days
  • Frozen: 28 days

Setup Schedule

Service Area must be determined
10 mL aliquot of a 24-hour urine collected in a no preservative plastic urine container
Urine preserved with boric acid • Urine preserved with acetic acid • Urine preserved with HCl • Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
2 mL
Record total volume and collection duration on specimen container and test requisition
Plastic urine container
Room temperature
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Service Area must be determined
Ordering Restrictions may apply. Please provide SERVICE AREA INFORMATION to find available tests you can order.
Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano. Please provide SERVICE AREA INFORMATION to find available tests you can order.
In-home collection is not available in your area through Quest Mobile.
Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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